playback/player/gtk/gtk-video-renderer.c

   1 /* GStreamer
   2  *
   3  * Copyright (C) 2015 Sebastian Dröge <sebastian@centricular.com>
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Library General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Library General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Library General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  18  * Boston, MA 02110-1301, USA.
  19  */
  20
  21 #include "gtk-video-renderer.h"
  22
  23 struct _GstPlayGtkVideoRenderer
  24 {
  25   GObject parent;
  26
  27   GstElement *sink;
  28   GtkWidget *widget;
  29 };
  30
  31 struct _GstPlayGtkVideoRendererClass
  32 {
  33   GObjectClass parent_class;
  34 };
  35
  36 static void
  37     gst_player_gtk_video_renderer_interface_init
  38     (GstPlayVideoRendererInterface * iface);
  39
  40 enum
  41 {
  42   GTK_VIDEO_RENDERER_PROP_0,
  43   GTK_VIDEO_RENDERER_PROP_WIDGET,
  44   GTK_VIDEO_RENDERER_PROP_LAST
  45 };
  46
  47 G_DEFINE_TYPE_WITH_CODE (GstPlayGtkVideoRenderer,
  48     gst_player_gtk_video_renderer, G_TYPE_OBJECT,
  49     G_IMPLEMENT_INTERFACE (GST_TYPE_PLAY_VIDEO_RENDERER,
  50         gst_player_gtk_video_renderer_interface_init));
  51
  52 static GParamSpec
  53     * gtk_video_renderer_param_specs[GTK_VIDEO_RENDERER_PROP_LAST] = { NULL, };
  54
  55 static void
  56 gst_player_gtk_video_renderer_get_property (GObject * object,
  57     guint prop_id, GValue * value, GParamSpec * pspec)
  58 {
  59   GstPlayGtkVideoRenderer *self = GST_PLAY_GTK_VIDEO_RENDERER (object);
  60
  61   switch (prop_id) {
  62     case GTK_VIDEO_RENDERER_PROP_WIDGET:
  63       g_value_set_object (value, self->widget);
  64       break;
  65     default:
  66       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
  67       break;
  68   }
  69 }
  70
  71 static void
  72 gst_player_gtk_video_renderer_finalize (GObject * object)
  73 {
  74   GstPlayGtkVideoRenderer *self = GST_PLAY_GTK_VIDEO_RENDERER (object);
  75
  76   if (self->sink)
  77     gst_object_unref (self->sink);
  78   if (self->widget)
  79     g_object_unref (self->widget);
  80
  81   G_OBJECT_CLASS
  82       (gst_player_gtk_video_renderer_parent_class)->finalize (object);
  83 }
  84
  85 static void
  86     gst_player_gtk_video_renderer_class_init
  87     (GstPlayGtkVideoRendererClass * klass)
  88 {
  89   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
  90
  91   gobject_class->get_property = gst_player_gtk_video_renderer_get_property;
  92   gobject_class->finalize = gst_player_gtk_video_renderer_finalize;
  93
  94   gtk_video_renderer_param_specs
  95       [GTK_VIDEO_RENDERER_PROP_WIDGET] =
  96       g_param_spec_object ("widget", "Widget",
  97       "Widget to render the video into", GTK_TYPE_WIDGET,
  98       G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
  99
 100   g_object_class_install_properties (gobject_class,
 101       GTK_VIDEO_RENDERER_PROP_LAST, gtk_video_renderer_param_specs);
 102 }
 103
 104 static void
 105 gst_player_gtk_video_renderer_init (GstPlayGtkVideoRenderer * self)
 106 {
 107   GstElement *gtk_sink = gst_element_factory_make ("gtkglsink", NULL);
 108
 109   if (gtk_sink) {
 110     GstElement *sink = gst_element_factory_make ("glsinkbin", NULL);
 111     g_object_set (sink, "sink", gtk_sink, NULL);
 112
 113     self->sink = sink;
 114   } else {
 115     gtk_sink = gst_element_factory_make ("gtksink", NULL);
 116     self->sink = gst_object_ref_sink (gtk_sink);
 117   }
 118
 119   g_assert (self->sink != NULL);
 120
 121   g_object_get (gtk_sink, "widget", &self->widget, NULL);
 122 }
 123
 124 static GstElement *gst_player_gtk_video_renderer_create_video_sink
 125     (GstPlayVideoRenderer * iface, GstPlay * player)
 126 {
 127   GstPlayGtkVideoRenderer *self = GST_PLAY_GTK_VIDEO_RENDERER (iface);
 128
 129   return gst_object_ref (self->sink);
 130 }
 131
 132 static void
 133     gst_player_gtk_video_renderer_interface_init
 134     (GstPlayVideoRendererInterface * iface)
 135 {
 136   iface->create_video_sink = gst_player_gtk_video_renderer_create_video_sink;
 137 }
 138
 139 /**
 140  * gst_play_gtk_video_renderer_new:
 141  *
 142  * Returns: (transfer full):
 143  */
 144 GstPlayVideoRenderer *
 145 gst_play_gtk_video_renderer_new (void)
 146 {
 147   GstElementFactory *factory;
 148
 149   factory = gst_element_factory_find ("gtkglsink");
 150   if (!factory)
 151     factory = gst_element_factory_find ("gtksink");
 152   if (!factory)
 153     return NULL;
 154
 155   gst_object_unref (factory);
 156
 157   return g_object_new (GST_TYPE_PLAY_GTK_VIDEO_RENDERER, NULL);
 158 }
 159
 160 /**
 161  * gst_play_gtk_video_renderer_get_widget:
 162  * @self: #GstPlayVideoRenderer instance
 163  *
 164  * Returns: (transfer full): The GtkWidget
 165  */
 166 GtkWidget *gst_play_gtk_video_renderer_get_widget
 167     (GstPlayGtkVideoRenderer * self)
 168 {
 169   GtkWidget *widget;
 170
 171   g_return_val_if_fail (GST_IS_PLAY_GTK_VIDEO_RENDERER (self), NULL);
 172
 173   g_object_get (self, "widget", &widget, NULL);
 174
 175   return widget;
 176 }